Influence of the angiotensin II type 1 receptor gene polymorphism on the effects of perindopril and nitrendipine on arterial stiffness in hypertensive individuals

Hypertension
A BenetosR Asmar

Abstract

Angiotensin-converting enzyme inhibitors improve arterial stiffness independently of blood pressure reduction. Since we have recently shown that in hypertensive individuals the A1166C polymorphism of the angiotensin II type 1 receptor (AT1-R) is an independent determinant of aortic stiffness, we designed the present study to assess the influence of this polymorphism on the changes of aortic stiffness after chronic treatment with the angiotensin-converting enzyme inhibitor perindopril and the calcium channel blocker nitrendipine. Forty perindopril- and 42 nitrendipine-treated hypertensive individuals were studied. We evaluated aortic stiffness by measuring the carotid-femoral pulse wave velocity. Carriers of the AT1-RC allele showed higher baseline values of pulse wave velocity than AA homozygotes (P < .05). In the perindopril group, a threefold greater reduction in pulse wave velocity was observed in carriers of the C allele than in AA homozygotes (-2.85 +/- 0.62 versus -0.94 +/- 0.32 m/s, respectively; P < .001), whereas in the nitrendipine group, pulse wave velocity decreased only in AA homozygotes and not in AT1-R C carriers (-1.38 +/- 0.35 versus +0.04 +/- 0.60 m/s, respectively; P < .01). These results indicate that accord...Continue Reading

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